mb/google/dedede: drop obsolete ISST workaround

Early JSL silicon hang while booting Linux with ISST enabled. The
malfunctioning silicon revisions have been used only for development
purposes and have been phased out. Thus, drop the ISST workaround.

Change-Id: Ic335c0bf03a5b07130f79c24107a1b1b0ae75611
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46459
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>

1 files changed, 0 insertions, 16 deletions

diff --git a/src/mainboard/google/dedede/mainboard.c b/src/mainboard/google/dedede/mainboard.c
index 45b25809cdc2..23b15969c8d3 100644
--- a/src/mainboard/google/dedede/mainboard.c
+++ b/src/mainboard/google/dedede/mainboard.c
@@ -29,19 +29,6 @@ static void mainboard_update_soc_chip_config(void)
 	}
 }
 
-__weak void variant_isst_override(void)
-{
-	/*
-	 * Implement the override only if the board uses very early/initial revisions of
-	 * Silicon. Otherwise nothing to override.
-	 */
-}
-
-static void mainboard_config_isst(void *unused)
-{
-	variant_isst_override();
-}
-
 static void mainboard_init(void *chip_info)
 {
 	const struct pad_config *base_pads;
@@ -79,6 +66,3 @@ struct chip_operations mainboard_ops = {
 	.init = mainboard_init,
 	.enable_dev = mainboard_enable,
 };
-
-/* Configure ISST before CPU initialization */
-BOOT_STATE_INIT_ENTRY(BS_PRE_DEVICE, BS_ON_ENTRY, mainboard_config_isst, NULL);